refactor: Use haumea for filesystem-based module system for flake outputs

refactor: Use hyphen(`-`) for variable names & folder names(except Python), replace all unserscore(`_`) with hyphen(`-`).

hosts/12kingdoms-shoukei/default.nix

@@ -0,0 +1,42 @@
+{
+  nixos-hardware,
+  myvars,
+  ...
+}:
+#############################################################
+#
+#  Shoukei - NixOS running on Macbook Pro 2020 I5 16G
+#   https://github.com/NixOS/nixos-hardware/tree/master/apple/t2
+#
+#############################################################
+let
+  hostName = "shoukei"; # Define your hostname.
+in {
+  imports = [
+    nixos-hardware.nixosModules.apple-t2
+    ./apple-set-os-loader.nix
+    {hardware.myapple-t2.enableAppleSetOsLoader = true;}
+
+    ./hardware-configuration.nix
+    ../idols-ai/impermanence.nix
+  ];
+
+  boot.kernelModules = ["kvm-amd"];
+  boot.extraModprobeConfig = "options kvm_amd nested=1"; # for amd cpu
+
+  networking = {
+    inherit hostName;
+    inherit (myvars.networking) defaultGateway nameservers;
+
+    # configures the network interface(include wireless) via `nmcli` & `nmtui`
+    networkmanager.enable = true;
+  };
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "23.11"; # Did you read the comment?
+}